Variant 17-44353818-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_198475.3(FAM171A2):c.2396C>T(p.Ala799Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000347 in 1,423,152 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0019 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00017 ( 1 hom. )

Consequence

FAM171A2
NM_198475.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.374

Variant links:

Genes affected

FAM171A2 (HGNC:30480): (family with sequence similarity 171 member A2) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

FAM171A2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.0030255318).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FAM171A2	NM_198475.3 linkuse as main transcript	c.2396C>T	p.Ala799Val	missense_variant	8/8	ENST00000293443.12	NP_940877.2	A8MVW0
FAM171A2	XM_017024490.2 linkuse as main transcript	c.1844C>T	p.Ala615Val	missense_variant	6/6		XP_016879979.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FAM171A2	ENST00000293443.12 linkuse as main transcript	c.2396C>T	p.Ala799Val	missense_variant	8/8	1	NM_198475.3	ENSP00000293443.6		A8MVW0

Frequencies

GnomAD3 genomes

AF:

0.00187

AC:

281

AN:

150482

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00651

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000594

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000208

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00145

GnomAD3 exomes

AF:

0.000130

AC:

AN:

69306

Hom.:

AF XY:

0.000123

AC XY:

AN XY:

40548

show subpopulations

Gnomad AFR exome

AF:

0.00688

Gnomad AMR exome

AF:

0.0000868

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000646

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000167

AC:

213

AN:

1272562

Hom.:

Cov.:

AF XY:

0.000129

AC XY:

AN XY:

627930

show subpopulations

Gnomad4 AFR exome

AF:

0.00735

Gnomad4 AMR exome

AF:

0.000278

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000196

Gnomad4 OTH exome

AF:

0.000370

GnomAD4 genome

AF:

0.00187

AC:

281

AN:

150590

Hom.:

Cov.:

AF XY:

0.00185

AC XY:

136

AN XY:

73590

show subpopulations

Gnomad4 AFR

AF:

0.00650

Gnomad4 AMR

AF:

0.000593

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00143

Alfa

AF:

0.00185

Hom.:

Bravo

AF:

0.00193

ExAC

AF:

0.000267

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 28, 2023

The c.2396C>T (p.A799V) alteration is located in exon 8 (coding exon 8) of the FAM171A2 gene. This alteration results from a C to T substitution at nucleotide position 2396, causing the alanine (A) at amino acid position 799 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.086

BayesDel_addAF

Benign

-0.67

BayesDel_noAF

Benign

-0.73

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.0032

Eigen

Benign

-0.80

Eigen_PC

Benign

-0.70

FATHMM_MKL

Benign

0.44

LIST_S2

Benign

0.45

MetaRNN

Benign

0.0030

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.34

PrimateAI

Pathogenic

0.84

PROVEAN

Benign

-0.71

REVEL

Benign

0.10

Sift

Benign

0.35

Sift4G

Benign

0.29

Polyphen

0.0040

Vest4

0.020

MutPred

0.44

Loss of relative solvent accessibility (P = 0.0404);

MVP

0.030

ClinPred

0.012

GERP RS

-0.71

Varity_R

0.087

gMVP

0.066

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over